package com.atguigu.springcloud.controller;

import com.alibaba.csp.sentinel.annotation.SentinelResource;
import com.alibaba.csp.sentinel.slots.block.BlockException;
import com.atguigu.springcloud.entities.CommonResult;
import com.atguigu.springcloud.entities.Payment;
import com.atguigu.springcloud.service.PaymentService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;

import javax.annotation.Resource;

@RestController
@Slf4j
public class CircleBreakController {
    @Value("${server-url.nacos-user-service}")
    private String serverURL;
    @Resource
    private RestTemplate restTemplate;

    @RequestMapping("/consumer/fallback/{id}")
//    @SentinelResource(value = "fallback")//没有配置
//    @SentinelResource(value = "fallback",fallback = "handlerFallback") //fallback只负责业务异常
//    @SentinelResource(value = "fallback",blockHandler = "blockHandler") //blockHandler只负责控制台配置违规
    @SentinelResource(value = "fallback",fallback = "handlerFallback",blockHandler = "blockHandler",
                                              exceptionsToIgnore = {IllegalArgumentException.class})
    public CommonResult<Payment> fallback(@PathVariable Long id)  {
        CommonResult<Payment> result=restTemplate.getForObject(serverURL+"/paymentSQL/"+id,CommonResult.class,id);
        if(id==4){
            throw new IllegalArgumentException("非法参数异常");
        }else if(result.getData()==null){
            throw new NullPointerException("该id没有记录，空指针异常");
        }
        return result;
    }
    public CommonResult handlerFallback(@PathVariable Long id,Throwable e){
        Payment payment=new Payment(id,"null");
        return new CommonResult(444,"兜底方法handlerFallback，exception内容"+e.getMessage(),payment);
    }

    public CommonResult blockHandler(@PathVariable Long id, BlockException e){
        Payment payment=new Payment(id,"null");
        return new CommonResult(445,"限流blockHandler异常，exception内容"+e.getMessage(),payment);
    }



//    OpenFeign
    @Resource
    private PaymentService paymentService;

    @GetMapping("/consumer/paymentSQL/{id}")
    public CommonResult<Payment> paymentSQL(@PathVariable("id")Long id){
        return paymentService.paymentSQL(id);
    }
}
